1000111010221 has 24 divisors (see below), whose sum is σ = 1049461670400. Its totient is φ = 952008798240.

The previous prime is 1000111010207. The next prime is 1000111010237. The reversal of 1000111010221 is 1220101110001.

It is not a de Polignac number, because 1000111010221 - 2³⁷ = 862672056749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000111010198 and 1000111010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000111010291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65278000 + ... + 65293318.

It is an arithmetic number, because the mean of its divisors is an integer number (43727569600).

Almost surely, 2^{1000111010221} is an apocalyptic number.

It is an amenable number.

1000111010221 is a deficient number, since it is larger than the sum of its proper divisors (49350660179).

1000111010221 is a wasteful number, since it uses less digits than its factorization.

1000111010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15737 (or 15598 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1000111010221 its reverse (1220101110001), we get a palindrome (2220212120222).

The spelling of 1000111010221 in words is "one trillion, one hundred eleven million, ten thousand, two hundred twenty-one".